Looks like a lot of work to me...
It looks like you worked a long time on this.. am I right? I mean there are so many characters and other graphics you have drawn. The idea and atmosphere of the game were good. The graphics were reasonably too. A lot of other things were good but there were also a lot of things not so good.
I bet other people told you this before, but in my opinion you should work on your:
- actionScript: Holding an attack button results in spamming, and the character goes crazy.
- Movements: Your characters cannot move.
- Intro: The intro was okay, but if you close the window and want to play again another time it should be skippable.
- AI: I don't know if the other player was supposed to fight back but he doesn't. I know that making a good AI is not easy, but make it at least do something.
- Interface: Sometimes I really had to search for buttons in order to get myself to the actual game.
My overall score turned out to be a little higher than my avarage because of the time and efforts you spend on it.